參數(shù)資料
型號： TLV320AIC3253IRGER
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQCC24
封裝： 4 X 4 MM, PLASTIC, QFN-24
文件頁數(shù)： 33/35頁
文件大小： 738K
代理商： TLV320AIC3253IRGER
www.ti.com
SLOS631 – MARCH 2010
Electrical Characteristics, Bypass Outputs
At 25°C, AVdd, DVdd, IOVDD = 1.8V, LDO_in = 1.8V, AVdd LDO disabled, fs (Audio) = 48kHz, Cref = 10 mF on REF PIN,
PLL disabled unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ANALOG BYPASS TO HEADPHONE AMPLIFIER, DIRECT MODE
Load = 16
(single-ended), 50pF;
Input and Output CM=0.9V;
Device Setup
Headphone Output on LDOIN Supply;
INL routed to HPL and INR routed to HPR;
Channel Gain=0dB
Gain Error
±0.4
dB
Noise, A-weighted(1)
Idle Channel, INL and INR ac-shorted to
3
mVRMS
ground
THD
Total Harmonic Distortion
446mVrms, 1-kHz input signal
–82
dB
(1)
All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may
result in higher THD+N and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter
removes out-of-band noise, which, although not audible, may affect dynamic specification values
Electrical Characteristics, Microphone Interface
At 25°C, AVdd, DVdd, IOVDD = 1.8V, LDO_in = 1.8V, AVdd LDO disabled, Cref = 10 mF on REF PIN, PLL disabled unless
otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
MICROPHONE BIAS
Bias voltage
Bias voltage CM=0.9V, LDOin = 3.3V, no load
Micbias Mode 0, Connect to AVdd or LDOin
1.25
V
Micbias Mode 1, Connect to LDOin
1.7
V
Micbias Mode 2, Connect to LDOin
2.5
V
Micbias Mode 3, Connect to AVdd
AVdd
V
Micbias Mode 3, Connect to LDOin
LDOin
V
CM=0.75V, LDOin = 3.3V
Micbias Mode 0, Connect to AVdd or LDOin
1.04
V
Micbias Mode 1, Connect to AVdd or LDOin
1.42
V
Micbias Mode 2, Connect to LDOin
2.08
V
Micbias Mode 3, Connect to AVdd
AVdd
V
Micbias Mode 3, Connect to LDOin
LDOin
V
Output Noise
CM=0.9V, Micbias Mode 2, A-weighted, 20Hz
10
to 20kHz bandwidth,
mVRMS
Current load = 0mA.
Current Sourcing
Micbias Mode 2, Connect to LDOin
3
mA
Micbias Mode 3, Connect to AVdd
160
Inline Resistance
Micbias Mode 3, Connect to LDOin
110
Copyright 2010, Texas Instruments Incorporated
7
Product Folder Link(s): TLV320AIC3253
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